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Home >> Dodge and Ram >> 2007 >> Caliber SXT, 1.8 C >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0122 To P0222 >> P0135-O2 Sensor 1/1 Heater Performance >> Possible Causes

Possible Causes

Possible Causes 
(K99) O2 1/1 HEATER CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
(Z916) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
OXYGEN SENSOR 1/1
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .  

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